Covered shoes are all like that wan.
There is this brand called Geox. Dunno how true it is that
it dont stink.
Anyway, all covered shoes will stink in sg weather.
Try these often:
1) Sun the shoes often
2) Put in shoe balls and charcoal shoe bags you find in Daiso
often
3) Spray shoe deodarants into the shoes before and after you
wear them.
4) Scrub your feet when you shower with pumice and scrub gels,
especially between the toes.
5) Trim your toenails regularly and clear away those dead skin
and cuticles (Preferably after a shower/bath where your nails and
skins are soften.)
6) Avoid applying lotion or creams in between the toe nails.
7) Wears Socks.
8) Apply foot powder before wearing socks. (I also tend to spray
some of my body's deodarant onto the socks before I wears my
shoes.)
9) Dont take off your shoes in public.
10) Opt for strappy sandals. For those gals working in the
office, have at least a pair black colour kitten heeled mules
under the office table. It looks much more presentable if a
client suddenly walks into your office and you need to stand up and
lead them or entertain them. It also will not look out of
place in the office.