Sweet singing in the choir

This evening in choir practice I hit a high note I haven't reached in years--not just the F at the top of the treble clef, but the G on top of it. Usually the E just under the top is as high as I can get.

I wasn't straining at all tonight for notes at the top of my range (and that's almost over the top for me). Either the months of singing every Wednesday night are paying off, or it helps to eat a salad that's heavy on the onions before going to rehearsal.

If it's the onions, I'd gladly eat them every week, but that might be too high a price for those who sing near me in choir.

Sour notes or sour breath? Which is worse?