PUR stain for kitchen floor - shows can be used interior and exterior yet NOT for interior flooring?

shapala

hi all.

I'm currently redoing my hardwood kitchen flooring.

I bought lidl's 5l PUR Wood Stain at the weekend which says for decking and also indoor use. It's the walnut colour option.

It says for both exterior and indoor use, yet quizzically says NOT for indoor wooden flooring or panelling for directions and how to use..

After sanding the hardwood flooring and cleaning it (it's a victorian apartment and flooring is original) and certainly needs a couple new layers of stain) can anyone suggest why it could be an issue? I'm going to do a quick test run on some of the less obvious places to see once done with sanding and cleaning to get an idea but if anyone has reasons as to why it's not suitable, could you kindly let me know?

It's fine for decking, breathable and waterproof, I can't understand why it says it can't be used indoors (even though it's described as for interior and exterior use).

Thanks in advance.

FYI: it's the walnut version of this:
http://offers.kd2.org/en/gb/lidl/piiKl/