There needs to be some very strict labeling requirements for this. If I'm going to eat lab grown meat, I would like to know beforehand.
the lab-grown stuff will actually be _cleaner_ than anything made 'organically'
cells don't poop (the same way), and aren't exposed to pathogens in a lab
Animals also have immune systems to survive mild infections. Cells grown in a lab are much more prone to any form of contamination at all.
It's possible to deal with both things in a lab, but not inexpensively.