what if you had the option to turn yourself invisible with a button?

I would never switch out of it

define invisibility
if you get some dirt on your shoes, do people see the dirt moving?
if you sneeze, is your snot invisible?
if you wear clothes, do the clothes become invisible too?
what if you take your phone out? can people see that?
can you see yourself? if not, it would almost be like being blind
too many holes in this lazy hypothetical thing