How do I remove a smoke smell from the garage?

You should get rid of any fabric that's in the garage that smells like smoke. Use an odor eliminator or air purifier and make sure the garage is well ventilated. You could use fans with the garage door open. And while it definitely won't be fun, you can scrub the ceiling and walls and paint. You can also dry cleaning with baking soda, dish soap and vinegar.

Is this from cigarette smoke? I found this article for you.

Odo-Ban is the best I've ever used to remove it.

And . . . Open the door on a nice day and air it out.

Hi Desiree, hope this link helps you out,

https://www1.garageenvy.com/blog/how-to-freshen-up-a-stinky-garage

Vent the area! Install a fan?