2020.07.28 Nitric oxide and apoptotic death

Cells use nitric oxide to self destruct. The 8 sinus cavities generate nitric oxide as a free radical of 5 seconds duration. It has various health benefits (when done through nasal breathing) including viricide and bactericide, and especially smooth muscle dilation. Is it plausible that the relaxed state of breathing nasally would somehow strengthen the individual cells against the internal sensitivity to nitric oxide.

Stress causes teleomer destruction and 'takes years off a person's life'. It seems reasonable to think that nitric oxide and relaxed breathing is relevant to longevity. Not only for the relaxation effect in general but at the cellular level where it regularly 'toughens' the cell against self destruction and of course supplies more nutrients through greater blood flow?