Should I make some alien repellent of my own, just in case?
You don't need to make any alien repellent, nor is it a good idea to interact with crocodiles, swing from ropes attached to mops or do pretty much anything else you did in the bubble. This was a unique adventure. Youngsters should always cook under adult supervision, especially on a complimentary hot plate. Don't spray soda (or anything else) at dogs, whether they're aliens or not. Always be kind to animals, even interdimensional ones.