Has anyone smelt like the weirdest smells and nothing around to smell like it.....if that sentence even made sense.. 😂

I’ll be at work (retail) and sometimes I smell like car oil(my boyfriends a mechanic so I know what that smells like) and like bodily odor or like onions all at once... I’ve missed my period completely and I’ve been getting very faint positives but not bfp worthy. I go to a local care center tomorrow for a pregnancy test hoping there’s are better than the ones I’ve taken...plus I just had a miscarriage a month ago, however I was taking tests with strips to see when it stopped and it stopped around the time I would’ve ovulated. The only symptoms I have is irritability, emotional, and sometimes feeling nauseous. I’m sort of at a loss for appetite as well.