I've been to plenty of contests that check your fire extinguishers. I've been to them where the cooks were not warned and the fire marshall came through. If you didn't have a up to date one, with tags and/or a receipt that had to be 5 pound variety. You had to run to the store. Fortunately, I have one and get it re-tagged every year. but if you were in a rv like me, what would you do?
Better off having one. I also carry a CO2 one that I would only use in my smokers. It's not tagged because it costs too much. But those other one's are just for show for the marshall. My real one I keep in the rv. No need to ruin a perfectly good smoker blasting it with the wrong chemical fire extinguisher.
FROM SEA TO SHINING SEA BBQ TOUR
Red Jambo one off
Homer Simpson 22 " Weber Kettle
Red 18 1/2" Weber Kettle
Black 26 3/4" Weber Kettle