I have some slight allergies. How to scratch that nose once in awhile?
Frequent hand washer here, but nowhere close to monk level frequency. I try to avoid touching my face (esp. eyes/nose) unless my hands are clean as I've heard that's how colds are spread.
Lots of "ewww" factor when one notices people in public washrooms who exit without washing hands.
For your question - maybe - like sneezing into elbow instead of hands, find a way to keep germs away from fingers. Rub upper part of nose with wrist/back of hand (not touching nostrils or eyes for that matter). Keep fingers away since you touch other things with fingers. Maybe (?) this is safer until you can wash.
Use germ-killing disposable tissues?
Maybe others have better suggestions.
Now I should go wash my hands...