My kitchen smells like pepto bismol

And apperently it’s because the oven was emiting gas. My mom was all like ‘remember that because gas is dangerous so thank you for telling me.’ And i’m just here suffacating because medicine makes me vomit thinking ‘why the fuck is there an option for it if it’s so dangerous?’

I have some issues with breathing and getting enough air. Not that it’s life endangering but I don’t feel air. Sometimes it feels like I’m not breathing at all and I panic. My fear of suffacation is really big. I fear the air might slip away from my lungs without further notice.
I’m really afraid of breathing.