I’d love to read this research. Frankly, I have a hard time believing that they’ve actually proven that infants can be harmed by smoke residuals in clothing.
That said, and at the risk of sounding judgmental, you really should quit smoking. Smoking will shorten your life and reduce the quality of your life. Even if you protect your children from the smoke, you are depriving them of years of your company. You are depriving their children of their grandparent. I know it’s not easy, but I always give quitters two pieces of advice that helped me quit:
1. If you slip and have a smoke, don’t think of it as a failure, as Blues Traveler said: “there’s no such thing as a failure who keeps trying.” Keep working at it.
2. As Yoda said: “Do or do not. There is no try.” Don’t think of it as trying, don’t tell people you are trying to quit, tell them you are quitting. Saying and thinking: “I’m trying to quit” leaves failure as an option. It is not an option, no matter how long it takes to quit.