I really don't touch the ears unless I have to. I check them all the time. Both my golden and GSD had minor ear infections when they were puppies, knock on wood, nothing since.
Misty- Samoyed Mix
Tannor- Golden Retriever CGC
Robyn- German Shepherd CGC
Cats-Thunder, Harley, Miley, Bandit, and Ferah
RIP Boo..Black Lab
"A dog is the only thing on this earth that loves you
more than he loves himself."