If the exhaust pipe is blocked by snow, exhaust fumes can seep into the cabin and carbon monoxide can poison the occupants, Smith said. ————— ...

The AutoLoc Smoke Screen Kit is $186 on Amazon.com. “At a push of a button you can have a huge billow of smoke emerge from your exhaust pipe,” says the product’s manufacturer.

That’s What Happens When You Foolishly Block A Tailpipe Trying to block a car’s exhaust pipe is never a good idea.