It's hard to explain, I'm having a probably new disorder, is it linked to inhalation of gas, fumes, particularly and almost exclusively the ones of tobacco. I live in France, where people irresponsibly smoke quite a lot (35% in the South, that I will leave hopefully)
It is like that since more than 2 years, I didn't vomit the first year, I was simply leaving quickly when possible the place, to rinse my nose for example, deeply breath 'safe' air.
But this year I started to vomit slightly each time it happens, my subconscious idea is probably to eliminate some traces of the toxic air inhaled, which can still be contained a bit in saliva, so I make myself vomit until the signs of the last food intake (I feel even bad to spoil food).
I just want to exhale as much as possible what was possibly exposed to a 'not-safe' air, I know food circuit is not the same as air circuit in the body, but the fact that they are somewhat shared at the beginning makes me think to just try and feel better if I purge myself
To be more complete, the 2 years before it, I had my first troubles, that are related, I was disgusted by any fat, even good fat, and this disorders has been terrible for my brain balance, after 2 years I finished by understanding the need of vital fat (omegas), and during this period, I also made myself vomit, but completely the meals, when I realized there were fat in, but that was very occasional, for example when having to eat with people.
In both cases, it was not a http://en.wikipedia.org/wiki/Purging_disorder like people tend to have, I had never been focused on my weight, I was of course underweight during my no-fat period, but now I've a normal BMI in [18.5, 25]
So to come back to the current problem, lately I had to go to an interview, take transports, which is a pleasure, (smoking banned in transports) but as soon as you are in the streets, it's almost impossible to avoid breathing tobacco, so in that day, I made myself 'slightly' puke 6 times in total (it takes between 5 minutes to 20 minutes depending how far was the last thing you eat/drink), I try to drink something dense just before going in danger :s, or something like salad, and again I really try hard not to spoil food, at the first sign of food I stop, usually I spit around 20ml of saliva, which is enough to feel 'cleaned'. This is also very exhausting to do it, and to have a constant stress inside group of persons in smoking-allowed places, many persons don't smoke fortunately, but sometimes, just 1 smoker will be the problem.
So, that's terrible, I'm pretty alone having it, and really can't understand how non-smokers can accept to breath tobacco smoke.
This is really a trauma for me, I could 'accept' to breath a scooter exhaust fumes, I would be just a bit angry like everyone I think, but when it comes for example to someone in an electric car, but holding a cigarette and passing me, if I can't avoid breathing it, I will go find a place and vomit. I tend to accept it more easily because exhaust pipe have filters and are proven to pollute less (http://tab.bz/nosmoke), I also wonder how long those smoke remain toxic (http://chemistry.stackexchange.com/questions/9829/how-long-burned-tobacco-smoke-remain-toxic)
Medically, I heard vomiting is really bad for teeth, and for the acidity that shouldn't be coming in this direction, but as long as you quickly drink water after it, brush your teeth, doesn't it fix the acidity level? Are there deeper effects on the heart, I've heard?, and Isn't it less bad if it's a really superficial vomiting with low volume?
Could a medic really explain if the air flow can or cannot spread also in esophagus? I'm also trying to wear filtering mask, or I even manage to get a 8L flexible container, that I fill with air and put inside my backpack (that gives me 3 breathing), but you can't last 15 minutes with that, so it needs a lot of thinking for finding place, forecasting wind.. seriously