The phrase
"warm saltwater" refers to water that is both warm and has salt dissolved in it.
Full definition
Ben checked her paw and found no broken bones, while I filled another container
with warm saltwater.
I personally don't recommend «mainstream» mouthwashes (I usually
rec warm saltwater if they wish to rinse and stress flossing so the «bad bacteria will not stick together and cause disease».
For $ 5, you can drink cold beer while submerged
in warm saltwater at the Kennedy Soaking Pool.
I love golden milk or
a warm saltwater gargle for sore throats too, and a neti pot is fabulous for congestion or allergies.
Gargling with
a warm saltwater solution can also ease a sore throat.
In traditional membrane distillation, there is still a lot of heat lost, as the cool water constantly draws heat away from
the warmer saltwater.