Wear a gas mask? The Chinese Communist Party is trying to impose its will on Hong Kong.
But if you are still planning on going, I always find the TripAdvisor site to be helpful, and there's a forum where you can post questions.
June 8, 2020
It's been years for me, but I'd say island hopping and stay a day or two on one of the islands further out. Life there is probably still far different from the one on Hong Kong island or Kowloon, which is modern and crowded.
June 9, 2020
It depends on the purpose of your visit, I guess? If it's for tourism I guess you have already planned for the trip. If you've just moved to Hongkong for work or business, then it's different and depends what you need exactly.