I've seen professional installers leave a small gap 2-4mm between vinyl tiles(Please see pic).
This would expose dried glue which would come into the air space(even if a little) and you could basically see the glue in the gaps. Why do they do this? Surely it's better to have the tiles as close together as possible so you can neither see, smell it or let it comes up into your air space?
I have done some reading and it seems these are referred to as seams
1. Why leave a big gap when u can have them right close together?
2. How should one fill them up? Grout, caulk, silicone or some other way? I’d want to use a method where off gassing chemicals expires sooner.