What this video covers
The clip covers the one piece of protective equipment to put on before touching anything.
An N95 filters the large majority of airborne particles, spores included. Disturbing a colony is the moment airborne concentration spikes, so protection matters most in exactly the minutes people usually skip it.
The takeaway
Put the mask on before you start, not once things look dusty. The exposure happens during the first disturbance, before there is anything visible to react to.
Read the full written guide: N95 vs P100 for Mold.