The Vallejo paint range you quote is this, which is an artist's range and not for modelists. Their Model Air, Game Air, Game Color, etc. ranges, designed for wargamers and scale modelists do not contain alcohols, period. They are identical to AMMO Acrylics, AK Interactive acrylics, GW Acrylics, Scale 75 acrylics...

As for the presence of other chemicals in water-based acrylic paints like these, I am not disputing it. However, they are present in very low concentrations, and that is why they are considered non-toxic under EU regulations, which are quite stringent. These paints are all made in Spain according to EU regulations. Tamiya XF paints, regardless of thinner, create far more harmful fumes, given the high concentration of alcohols in them. Again, hence the very different labelling.

In my opinion, as someone who has extensively used both kinds, as well as enamels and lacquers, water-based acrylics are quite safe to use without a mask so long as there is adequate ventilation and one does not do things like ingest the paint. Alcohol-based acrylics are definitely not.

That is why I attempted to provide advice to [USER=20259]@BLT[/USER].