Your hammies stank probably because their fur is stained with
urine. Does your hammies, the butt area looks yellowish and slick?
Keep the urine spots cleared more often, and provide a lil thicker
bedding, to absorb the pee more efficiently before it stains them
as they walk over. Keeping them in cool spots, providing a great
hideout also helps reduce the heat and provide warmth and
safety.
Many hammies lovers have gradually changed from wood shavings to
even better pee absorbing bedding. Newer bedding that works even
better, and seems more comfortable... corn cobs, cat litter, BC,
etc. You may want to find out which bedding works best, in keeping
these smells off your hamster. Because one of the biggest reasona s
to why a hammies stinks, is attributed to their pee stains.