Yes sir, I have had pepper spray "cook-off" inside my car before. I used to work club security and did it for yearsand years. When I was thru bouncing for the night, I would put all the equiptment that I carried(except for guns and knives), in a gear bag and put it on the car seat next to me and head for home. Well, one night I must have dropped my OC fogger next to the seat instead of in the bag. My wife found it the next day and tossed it into the glove compartment and forgot about it. I could not find my fogger in the bag and never thought to ask my wife if she had seen it. Fast forward a couple of weeks, and I am driving around on a REALLY hot day. A truly broiling summer day. I started noticing that my damn eyes were running and would not stop. I didnt smell anything out of the ordinary, but my eyes kept tearing up. I thought that maybe I was getting some kind of exhaust leak in the interior of the car, so a couple of times I got out and looked my car over. Even crawled partway underneath it. Got back in and it was as bad or worse. I drove around like that for 2 hours, like an idiot, looking like I was bawling. I finally got into the glovebox to look for a tissue or napkin, and lo and behold I found the real culprit. The heat had swelled the pepper canister enough that the seal around the top had split a little and had let some of the OC escape. I tossed it in the trash, bought a new one and learned a good lesson.