Can you get herpes by accidentally touching the clean underwear of someone that has genital herpes?

No: the virus is incredibly fragile. Would have to be kept moist, room temperature, and very very soon after a blister burst. Even then, the cloth itself would damage it. Either person to person direct rubbing or very very close to that (wrestlers can transmit it)

No: Not if it's clean and hasn't been worn since it was washed. The risk is low even if it has been worn as long as you don't have broken skin on your hand, the person isn't having an outbreak, and you wash your hands. Hope this helps.

Herpes: Unlikely. The virus is transmitted through direct contact with an erupted, active herpes lesion.

Unlikely: The virus is short lived and the underwear was clean so very unlikely. You would need direct exposure. All the best.

No: This is not possible - you can only get herpes from direct contact with the person who has the infection. The tricky thing with herpes, however, is sores may not be visible. Sometimes virus can be passed without any physical evidence when there is intimate contact. Best to talk things through before sexual activity. There are good ways to protect yourself. Be safe!

No: Herpes is spread by a virus. Generally, viruses require some mode of transmission (saliva, blood, etc..). Assuming the underwear is clean, and there are no injuries to you (open wounds, cuts, etc..), you should not have to worry about getting genital herpes in this situation.