Smoke/vape

For those who have friends/family members who smoke/vape and want to see the baby:

I don’t feel comfortable going over to their place and also don’t feel comfortable having them come to mine because of the smoke particles And I don’t want them to hold baby. I suggested we go for a walk or hike or something outdoors but it’s bad weather so they want to do something else. I have a tendency to make things come off wrong even when I’m trying to put things nicely, what’s a good way to tell them about the smoke/vape issue? They wouldn’t do that around baby but the particles left over are still not something I want hanging around my baby.

Thank you!!