Do you think it's okay to share your toothbrush with someone?

My 2-year-old got a new toothbrush and was very excited about it, and she went to brush her dad's teeth with it and I stopped them both. I told her you never share your toothbrush, that it's for you and only you so you don't share germs. My husband acted like I was ridiculous and said toothbrushes are clean because of the toothpaste and told our daughter "I'm not weird about it like your mom." I told her that it doesn't matter if other people are okay with sharing them, you don't share toothbrushes. I am so grossed out by my husband's reaction and irritated that he's telling our daughter that it's okay. I'm curious - do you think it's okay to share your toothbrush with someone?