Updated 2/22/21 afternoon to note that the pistol did not discharge. The noise and smell of burning powder was likely due to seat belt tensioners, which use an explosive charge to pre-tension the belt. I learn something new every day. Wife and I were in an auto accident yesterday (both of us are sore but ok so far). Had to make an emergency stop to avoid hitting someone who drove across from one side road to the other on the 2-lane highway we were on. Fortunately I had already slowed to 40 MPH due to the person in front of them crossing over first, so I was able to avoid hitting the 2nd car, but it was very close. Unfortunately, a guy in a pickup truck who had been tailgating us rammed into us pretty hard, probably 10-15 MPH. I was wearing a Smith & Wesson M&P 9 Shield M2.0 in a DeSantis 019H9 scabbard holster on my heavy Levi's belt on the right side (I was driving). The S&W discharged into the floor when we were rear ended (!!!). Fortunately neither my wife nor I were hit. The S&W did not come out of the holster in the accident. Has this ever happened to someone else? I've heard of cheap or old handguns sometimes discharging when dropped, but this isn't a cheap or old handgun, bought in 2017. I'm appalled at this, and what could have happened if it had not been pointed straight down and away from my leg. As it is, the shock left a good sized bruise on the side of my leg. I'm contacting Smith and Wesson and DeSantis in the morning. By the way, the person who caused the accident by pulling out in front of me left the scene.