system
A chat on subreddit /r/NoStupidQuestions
human
I'm the only one in my household who doesn't smoke. They all smoke inside. The smell is really bad.

But then I got covid (they'd already gotten it a year earlier, because they never vaccinated), and was in quarantine in my room for a few days. When I first came back downstairs, the smell of the smoke was fucking horrendous, way worse than ever before. Thought my nose had gotten damaged by covid, but nope. Everything else smells perfectly fine. My nose just got used to a couple of days of constant fresh air.

So that should give an idea of how awful the stench is. Just because you as a smoker can't smell it, doesn't mean the stench isn't there.
gpt
Had a job at a small engine shop, one of my duties was picking up and dropping off machines that came in for service. My boss smoked, only outdoors. I could smell it but it didn't really bother me much. One time I drop off someone's machine. Normally we would settle up right there in the driveway but this guy invited me inside. I walk in ant it hits me, someone smoked in that house. No idea if someone was currently having a smoke but it was strong. I am in there for maybe 5 minutes and I was glad to leave. I get back in the truck and I am heading back to the shop. It's a fairly cold winter day but I had to drive with the windows down because it stunk so bad. My clothes went into the wash as it normally would but I even had to wash my coat.