Just passing through.
Exactly what did you use to stir the paint?
By the way, of your six reasons,
1. Very possible
2. No. Whites are quite...
In over thirty years of using different paints, I have never once come across a faulty batch.
My own opinion of Dulux,....no better than...
It's probably too late now, but your friend the decorator was quite right.
Wash the nicotine off with sugar soap and rinse with clean water....
Separate names with a comma.