Are there marks left behind on the floor from the fire and dead animal? Yeah? So, you're telling me this 30x30 foot stone room with a flame trap has never been set off before? My familiar is the first creature to die in there? Whoever built it never tested it? Because burn marks on surfaces would have been something special about the room... Now, give me back my familiar and DM better.
Fire itselt doesn't necessarily leave marks on the stone floor unless it's long and hot enough to melt stone, that's just byproducts of stuff not burning properly.
The testing familiar -just like yours- didn't leave any traces in all the trial runs, it just vanished to its realm of origin.
Now, continue playing your class instead of cosplaying as a rules lawyer.
Did you understand the communication being made? Clearly so. Looks like I used adequate wording.
Getting high oxygen isn't enough, you need propane purity and oxidizer purity (the not air inert gas and oxygen mix) or you get unburnt products. You also need perfect mixing, and essentially an adiabatic chamber. There is no combustion chamber on this earth outside of some absurd combustion lab that doesn't have soot buildup.
Not things you'd find in a dusty standard ass DND dungeon. But please continue bending over backwards to justify why you couldn't just day "you didn't think anything of it"
The room is pitch black, you're relying on dark vision, and you just failed your perception check. I can definitely see this happening outside of bad DM'ing, and I think the PC being sus of a blank room in an otherwise dangerous dungeon could also be in character.
Dawg the point is to have fun with your friends, not win vs the DM in a game of semantics about why they haven’t spent 10 hours of their week crafting a world for you for free
I think you underestimate how good cleaning spells are. You think some wizard is going to clean that pizza stone with their hands like some sort of peasant? They didn't go to Hogwarts to learn some substandard spell that requires you to preclean like some bargain bin dish soap would.
How would carefully examining your surroundings be anything but the opposite of reckless, though. Annoying, perhaps, but that's a different problem this would only encourage.