Avoiding saliva?

Meg • TTC after losing our baby girl at 37 weeks 👼🏻
Do you avoid oral during your fertile window? 
I just read something that says that saliva is harmful to sperm so avoid it during your fertile time. 
I was thinking about getting preseed this go round....but just realized while reading that article that we do oral like every single time we have sex lol...it's just too good to pass up...