Questions about rules

Just finished looking over the rules list, and was seeking some clarification if I may.

1. As for the rule against speculating illegal substance use, would we still be able to describe a smell associated with said substance? For example, if a house was very smoky and “skunky”, can reviewers make others aware without violating terms?

2. I see people ask questions about “damage” but most are not answered. This makes me wonder: am I allowed to answer a review comment asking how much I paid?

Best Regards,
SWIM