cigarette smell from neighbors apartment Remove Second Hand Smoke Neighbor's Downstairs Neighbor Keeps Smoking Outside
Description
It could be that your nose is sensitive to clots of blood, therefore, when you inhale it can indicate that you have rubbed or picked your nose to some degree

This is one reason why some people might experience diarrhea soon after consuming nicotine

doi: 10.1371/journal.pone.0170946 (View) Shereen Hamadneh, Jehan Hamadneh

If you want to know if you can smoke or not, ask for an ashtray