Here's my takes on toilet paper and generators.
1. People of certain religions or mindsets or philosophies or have a Great Depression legacy in their family memory have an inclination to bulk up needed supplies for times of hardship. Well, here comes SARS version 3, this time much more well-armed, and 14-day (or more) quarantines seem like a real possibility. What are you gonna run out of in 14 days? Toilet paper is at the top of the list. Stock up!
2. Generators. People start thinking about survivalist times, even if this one isn't it. It's not necessarily that they think they'll need a generator in a week, but this reminds them that they don't have one. Buy it while we're thinking of it.
3. People are stupid. Just calm down, buy normal stuff, put down "generator" as a reminder a few months from now when the prices will be back down, don't sell your stocks in a bear market, and there'll be plenty for everyone.