I had some pretty bad breathing problems before I quit. Like sitting in the ER with a nebulizer type of problems.

The last I started up was when we received a bill from the IRS that we were not expecting. Thankfully it was resolved, but it took months to stop again.

I got a vape two years ago and that has helped. I don't need nicotine now so I just use it for having something to put in my mouth other than a lot of food and drink. I haven't had breathing issues since then.