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TOPIC: Ammonia smell in nose after working out

March 2, 2012 5:40 PM
I posted this in the wrong topic a minute ago so I am going to post it again. I have been having a Ammonia smell- burning feeling in nose after working out. Does anyone else have this problem or know what it id from???
March 2, 2012 5:45 PM
That's so weird, I had this exact same thing happen to me today. No idea where it came from... I just kept getting the smell of ammonia, I was wondering if it was coming from me...
March 2, 2012 5:47 PM
It happens to me too! Looking forward to seeing if someone knows what it is.
March 2, 2012 5:48 PM
March 2, 2012 5:48 PM
Was happening to me a while ago - googled it and from what I remember it was *possibly* your body burning protein instead of carbs (because you have too few carbs to burn.)?

Be right back; of to goggle again. :) I'll find you links.

Edit: Never mind! Person above me posted links. That first one said: "The key to avoiding that ammonia smell is to ingest sufficient carbohydrates."

Which is what I remembered as well.
Edited by PixelTreason On March 2, 2012 5:51 PM
March 2, 2012 5:49 PM
A reader asked me to address the issue of "ammonia smell" when working out. Many of us have experienced this - especially during prolonged cardiovascular exercise. Your sweat has an acrid, ammonia-like smell. Obviously, no one wants to smell like a walking ammonia factory, so understanding how to avoid this smell would be useful. Some people are worried that the smell means that their body is "breaking down protein" - which is a major concern for anyone trying to build muscle!

What Is Ammonia?

The chemical make-up of ammonia is NH3. This means that there is one Nitrogen atom bound to three Hydrogen atoms. Ammonia can be a weak acid or a weak base, depending on what type of chemical it is suspended in. Ammonia has a strong, pungent odor that is easily recognizable in cleaning products, cat urine, and, for some people, sweat!

The key to ammonia in urine and sweat is the nitrogen. The only macronutrient in your body that contains nitrogen is amino acids, the building blocks of protein. In fact, many bodybuilders are always seeking a "positive nitrogen balance" meaning that less nitrogen leaves their body than enters their body. Since nitrogen is in every amino acid, and amino acids are the building blocks of muscle, someone in positive nitrogen balance is more than likely gaining muscle mass.

Your body uses amino acids for energy every day. There is no way to avoid this. Your body constantly goes into catabolic (tissue breakdown) and anabolic (tissue building) phases. When you accumulate mass (lean or fat), your anabolic phases exceed your catabolic phases, but you still experience both phases. When your body uses an amino acid for energy, it must convert the amino acid to a useable form of energy.

It does this by stripping the nitrogen atom off of the molecule. The skeleton molecule that is left behind is then further converted into glucose and used as fuel. In order to get rid of the excess nitrogen, your body typically processes the nitrogen in your kidneys and forms urea, CO(NH2)2 - basically, a carbon dioxide molecule bound to nitrogen and hydrogen. Urea is then excreted in the urine. If your kidneys cannot handle the load of nitrogen, then the nitrogen will be excreted as ammonia in your sweat.

One other factor to consider is water intake. The methods used for getting rid of excess ammonia, such as urine and sweat, all require water as a transport mechanism. If you are not getting adequate fluid, then the solution (ammonia + water) will not be diluted. Therefore, water plays a definite role. If you are not drinking enough fluids to have at least one or two clear urinations every day, you should drink more.

Based on this explanation, it is clear that your sweat will smell like ammonia only if an excessive amount of amino acids are being used for energy, or you are not receiving adequate water. This helps us find a solution to the problem.

Doesn't That Mean My Protein Intake Is Inadequate?

Many people mistakenly believe that ammonia sweat means that their protein intake is not high enough. The body will only utilize protein for energy when it does not have a sufficient supply of fats and carbohydrates. Muscles can use glucose and fat for energy, but your brain requires glucose. Since there is no direct metabolic pathway from fat to glucose, your body will use amino acids instead. If your protein intake is high, there is a chance that the amino acids that supply energy will come from ingested food and not your hard-earned muscle tissue - but why take that chance?

Let's look at an oil lamp. If you fill that lamp with Citronella oil, it will have a distinct odor when you light it. To eliminate that odor, do you add more Citronella? No! That's just fanning the flames. You'd use a different type of oil instead. The same goes for the ammonia smell - this is just the smell of amino acids being "burned" in your body. You don't solve that by adding more amino acids. Instead, you need to supply the fuel that your body prefers - the fuel that can be easily broken down to glucose in order to supply energy to your muscles and your brain - carbohydrates!

The key to avoiding that ammonia smell is to ingest sufficient carbohydrates. If you eat an ample amount of carbohydrate with every meal, then you should have plenty to fuel your exercise activity. Even people who work out on an empty stomach should have some glucose in their bloodstream upon rising - unless they subscribe to the myth that cutting out carbohydrates before bed helps you lose fat. If you find that the ammonia smell persists (even when you consume carbohydrate with every meal), try having a low glycemic carbohydrate before you workout.

A little oatmeal, a small apple, or even a piece of sprouted grain bread can provide the fuel that your body needs. Remember, your body requires fuel to burn fat! So don't think that providing some carbs before cardio is going to eliminate the fat burning process. In fact, most of my clients who consume a light meal before working out report that their energy levels go through the roof, and they have an incredible workout. If adding 80 calories in the form of a slice of sprouted grain bread kicks your energy levels into high gear and helps you burn 100 more calories during exercise (while sparing your muscles from being used as fuel), there is no reason to worry about dropping fat!

Learning Your Body

Your body can only process a certain amount of food at each meal. Therefore, it may not be possible to avoid that ammonia smell during prolonged activities. The smell is common, for example, amongst marathon runners, who are engaging in continuous cardiovascular exercise for hours at a time. In that situation, it is advisable to consume "sports drinks" or other sources of energy during the activity to fuel your body (and especially your brain) and prevent your amino acids from being burned for energy.

The next time you smell ammonia, don't worry. It doesn't mean that your muscle tissue being broken down, and it doesn't mean that you're doomed to stink for the rest of eternity. Consume a nutritious meal immediately after exercising - a balance of lean protein and whole, unprocessed carbohydrates - and then increase your carbohydrate intake throughout the day, or add a small "snack" prior to your next workout. An apple a day can help keep the ammonia smell away!

thats what i got when i googled it
Edited by DieVixen On March 2, 2012 5:50 PM
March 2, 2012 5:54 PM

I like the yahoo answers answer of the second link best. It make the most sense to this chemist!

*Edit - The reason why I don't like the bodybuilding answer is that it says to increase carbs. So why did it happen on a day that I DID have more carbs than usual? It's the amino acids breaking down, but by eating more protein, and drinking more water than I did today, I've never had it happen before. I think I just didn't have enough water to dilute the ammonia, and hence I got the smell.
Edited by lizard053 On March 2, 2012 5:58 PM
March 2, 2012 6:02 PM
OK so I am reading everything that you guys are posting and I want to say thanks a lot. One more question. From what I am reading,it doesn't sound like it is a bad thing. My body is burning fat because I am not eating a lot of carbs. Am I looking at this the wrong why???
October 15, 2012 12:31 PM
This is due to a few things, first low carb diet this completely normal, your body is using protein as it's primary fuel source and stored glycogen in muscles. The ammonia / chlorine smell is the break down of ammino acids. Drink more water or eat more carbs if it is bothersome. I will tell you that fit or fat this is something I have had happen when I work out since my teenage years (a long time ago 20+ years) it's completely normal if your carb intake is slow or low.
Edited by MissMoxie71 On October 15, 2012 12:32 PM
October 15, 2012 12:33 PM
This is due to a few things, first low carb diet this completely normal, your body is using protein as it's primary fuel source and stored glycogen in muscles. The ammonia / chlorine smell is the break down of ammino acids. Drink more water or eat more carbs if it is bothersome. I will tell you that fit or fat this is something I have had happen when I work out since my teenage years (a long time ago 20+ years) it's completely normal if your carb intake is slow or low.
August 14, 2013 11:56 AM
Glad I ran across this, because I was having this issue a few weeks ago. I actually started eating more carbs because I realized I needed the energy and I haven't had it happen again in the last week.
August 6, 2014 8:12 PM
I don't think that what twilighttabby mentioned is the same the effects you are pointing: I've exactly the same issues and I confirm you that is NOT coming from sweat, the smell (and burning) is directly from the nose (and maybe lungs at this point?)

In my case it happens sometimes after a quite hard (for me) cardio exercise but nothing extreme or prolonged; for example yesterday I've ridden my bike for 30mins with only the last 9-10min on a steep slope, a couple of minute after that, during the cool-down I've had the ammonia smell and burning nose.

I can tell you that, "on the paper" and In my case, it was not in carbo deficit; I'm tracking my diet on myfitnesspal and at that point of the day (late afternoon, returning from work) I've had enough carbo from breakfast and lunch...keep in mind that I'm a programmer, so during the day I've burned nothing in front of my damn desk.
I'm 33, weight 56kg for 174cm in height and I'm actually on a 2200cal/day diet (for building mass) with a 55% carbs, 25% protein, 20% fats ratio.

Also I'm a casual biker so I'm not trained at all but still the exercise was not so intense, I was wearing a cardio band and during the last "hard" 10min my heartrate was about 135-155bpm

So in conclusion perceiving the ammonia smell from the sweat or only directly into the nose are "maybe" two different cases...and now I'm still wondering what is the meaning of the last one.
Edited by decagrog On August 6, 2014 8:24 PM
August 7, 2014 8:53 AM
I also notice this smell. Thanks for the info!
August 7, 2014 8:58 AM
I'm actually really glad this thread came about because it used to happen to me once every... few weeks? (although it wasn't after a workout, I'd smell it in my pee. It would smell like sugar puffs). But it's happened a lot more recently ever since I started eating a lot healthier this past January. Maybe every other two or three days, something like that. But I've been eating a lot more fruit, and there are days where I limit my carbs a bit.

I was just at the doctor a few months ago and I had a complete physical, including a urine sample. So I know that I'm pretty healthy.
Edited by MsBetteDavis On August 7, 2014 9:01 AM
August 7, 2014 10:23 AM
I'm so glad to see this!!!
I've had this happen for years and didn't know why (I knew it was something to do with protein, since that's where the nitrogen would come from), and when I asked a couple of doctors over the years they couldn't figure it out either (which is discouraging).
August 16, 2014 10:15 AM
I've had this for years. What causes mine are tonsil stones. It's really gross.

Sometimes. A milk allergy will cause the same sensation/smell. The bacteria that emit sulphur when eating live in your tonsil crevices will cause this smell too.

If it concerns you enough, go to your primary provider, theyll figure it out! But you're not crazy!!! Haha
Edited by alexandriabee On August 16, 2014 10:16 AM


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