Here's my situation- 2 medical users, two non-users (my adult sons). I toke several times a day, as does the hubby. We smoke, eat, and vape.

My younger son had the same worries that you have. So we tested him- ZERO! He is always here when we use, and we don't open windows, turn on the fan, etc. It would be very unlikely that you would test positive since your lady opens the window and you aren't "in a cloud of smoke". The tests that you bought are the same as many businesses use. Believe them. (Businesses don't spend a penny more than they have to, so usually they get the "el cheapo" brands!) Hang in there, it will be OK!- Granny:hippy: