Was born in 1957. Grew up with everyday second hand smoke. Was generally unaware of it until my young teenage years. Then couldn't tolerate it. Would stuff a towel under my bedroom door to keep the smoke from creeping in during my mom's a.m. ciggy and coffee in the kitchen. Am a nonsmoker today and will walk across the street to avoid someone smoking. Yeeeech.
I grew up outside of the US in the 1980s when everyone smoked everywhere. Homes, restaurants, planes. I still can’t stand the smell of cigarette smoke, it makes me physically sick.