Testing propane alarm in more life like conditions?

Sometime ago after a long walk we came back to RV and the odor of propane was very strong and alarm did not go off. Turns out old alarm was 6 years old, so time for a new one. New alarm tests “OK” following the manufacture instructions. But I still want to perform somewhat of a more real live test. My first thought was turning on the stove and seeing if and when new alarm sounds off. Then I thought a much more controlled test would be better. I’m thinking about putting it in BBQ (outdoors) using spare battery and a couple leads for power and closing the lid and turning on the gas. I don't want to depend on the same manufacture who's alarm did not go off and also using their "test" button. More of a life like test would be better IMO.

Any thoughts? Good, bad, got a better idea or whatever?

We (wife and I) think I must of turned on the stove when putting my jacket on by mistake, going out of the door. Maybe my hand turned on the gas when sliding my arm down the sleeve putting on jacket? This has never happened to us before and think that is the only thing we think it could have been. My stove knobs have to be pushed in just a little and turned, probably like most stoves. We believe this was a fluke thing.

But as we’re laying in bed at night it still goes thru our minds that the alarm has not been tested "in real life"


Thanks