In my personal experience, I’ve always noticed that since my parents were deaf, it was always like their other senses were extremely heightened. I’ve briefly talked about this in another blog post, but they would smell my chocolate the second I opened the wrapper and know I was sneaking candy.
Even now, they both can smell things that I can’t at all. We do have to take the garbage out slightly more than I’d like to, because my parents can smell any garbage even with a scented bag and hiding the garbage can under the sink.
Besides having a super heightened sense of smell, they didn’t have many other superpowers, but they used that superpower extremely well. It was usually to catch me feeding my sugar addiction, but as parents it was the best superpower they could probably ask for.