My elderly neighbour & his son (who are not exactly DIY competent) has
painted their bathroom floorboards with creosote, yes creosote!, and
their next door neighbour has complained of the smell. He is quite
rightly concerned about his, as he has 2 young children who are
constantly breathing the fumes.

My neighbour has asked me for advice on how to get rid of the smell.

I could only suggest 2 things - 1) give it a few more days for the
smell to go away or 2) paint over the floorboards using something like
gloss paint to seal the boards.

Other ideas are bleach, but not sure if this is wise.

Does anyone have any other suitable suggestions?! My neighbour is
concerned and would like to resolve this quickly.

Many thanks