I work with open doors or windows, fans, always wear a Vitacore N99, have an EnvoMask too, and am willing to take any other precautions a client might request.

I practice heterologous immunization to avoid imprinting. By alternating between Canada and the States I've gotten 9 shots -- every mRNA flavour and most recently Novavax. I'm also double-vaccinated against mpox.

I've had no symptomatic illness since I started wearing N99s at all times in mid-2020: no Covid, colds, or even allergies.