managing family relationships around hoarding of hazardous materials

so, I was eating dinner in a common area of the family house when I noticed a ~decade old laptop with a swollen battery.

I brought it to the attention of the family member that owned it, and I was blown off with "just don't use it".

I've previously had them instigate/massively escalate conflicts over throwing out food that was covered in mold.

I showed a compilation of lithium battery fires and attempted to explain just how big of a hazard we were facing, especially when there isn't a fire extinguisher in the (wood framed) house, and the family member began yelling at me over "wasting perfectly good money over imagined danger", and then I was threatened with a 5950.

I don't have anything remotely resembling the means to get my own housing, but this seems like an acute and imminent danger.

Does anyone have any suggestions for a better course of action than ignoring it and hoping the battery does not vent?