I've been able to mostly stop rubbing my eyes or nose, when I'm serious about staying healthy. If I'm desperate, I rub them with some piece of clothing that's

I've been able to mostly stop rubbing my eyes or nose, when I'm serious about staying healthy. If I'm desperate, I rub them with some piece of clothing that's not much exposed to the air, such as the inside of my t-shirt. Or alternatively, washing my hands carefully with soap and water immediately before rubbing my eyes. I can't say for sure if those measures helped, but it seems plausible based on my experience.