A bottle of Tylenol could do it.
Wandering through the tunnels and getting knifed by one of the subway dwelling homeless could do it. Jumping into a rat's nest down there could also do it.
Jumping onto the tracks and getting electrocuted by a third rail.
Don't need to go into a subway to die from cyanide.
Don't even need to heat it up, just ingest it.
Exactly — and you sure as heck don’t need a QUART of it!