I once dated a guy that smoked a lot, & it didn’t last for unquestionably long. While I liked him a lot, I couldn’t get over his excruciating habit. When we dated, he used to spend the night at my residence. He was polite enough to ask me if he could smoke inside my residence which I politely told him no. I did have a screened in patio section & he was free to smoke there whenever he had the inkling. I am well aware that cigarette smoke gets into clothing & fabric & that odor is difficult to remove. The last thing that I wanted was for my residence to stink something like cigarettes all the time. He knew I didn’t love the stink, so he never invited me to his place… And to be entirely honest, I didn’t mind because I assumed that I would have been coughing from the stink of cigarette smoke. Honestly, studies have shown that cigarette smoke increases air pollutants inside the residence. The stink is absorbed into carpets, curtains, furniture, & it also gets into the HVAC vents & circulates throughout the residence. The air filter inside the HVAC component is not equipped to filter out the pollutants produced by cigarette smoke. So, the entire residence will have this pollutant lingering throughout the space. I didn’t really want to take the risk of dealing with excruciating air quality in my residence that could potentially seep into my HVAC machine, so I could not allow that guy to smoke anywhere near the inside. Well, we dated for less than a year, but the relationship finally ended because I refused to spend the night at his residence. I didn’t want to have to be miserable because the air stinked of cigarette smoke.