My mother was a heavy smoker and my brother and I had to grow up in that environment.
I don't smoke and I try to make sure my children aren't exposed to cigarette smoke.
Ex DH is now staying with DM while his house purchase goes through (long story) and DC spend the weekend with him at her house.
She has always denied smoking in the house although it smells heavily of smoke... Yesterday evening I called round unexpectedly and she was puffing away in the sitting room (where DC play) with cigarette ends in an ashtray, knowing full well DC are coming today.
I'm really upset, aibu?