That is how I cut back. It's a pain, but once I started ... I didn't cheat.
You could make that a house rule for the other smokers in your house ... that is only outdoor smoking ... period.
I also don't "allow" it in my house. Outside ... or in the garage with the door open if its raining.
I just want to add That I have empathy for smokers ... and also try to have some tolerance ... although the smell of smoke really bothers me now. I never realized I stunk so much.