Help me plz- guy smoked near me for 3 hrs and I feel so incredibly sick, remedies?

Treat it like morning sickness - avoid any foods that might upset your stomach, and try things like dry crackers or toast, ginger or peppermint tea will help too (ginger or peppermint anything will help).

For the record this is normal, nicotine is a poison so if you don't have a tolerance to it then you'll feel ill (smokers build-up a tolerance over time), plus smoke in general and various chemicals in cigarettes...just don't ever try smoking. I remember my first few puffs of a cigarette made me ill for a week, but you think because of that you'll never become addicted and that's exactly how you end-up addicted.

Go to the hospital emergency room NOW! The only home remedy to make your breathing easier, would be to drink a lot of coffee, which you said that you can't tolerate. The caffeine in the coffee is similar to the asthma medicine theophylline. In the hospital E.R. they will listen to your lungs, with a stethoscope and put a face mask over your nose and mouth, through which you will inhale nebulized [vapor] albuterol, and possibly oxygen. You will feel better within 5 minutes, so it is ridiculous to sit where you are, right now, and just worry about how you are feeling. If everyone else in your house is sleeping, don't wake them, unless you need a ride to the hospital. Just leave them a note, as the hospital will want you to sit there for a few hours, after you are feeling better, for "observation". Bring a book or magazine to read, while you are receiving treatment, which is always given while you are sitting in a comfortable padded chair.