Is the mould in the can or on a prepainted surface?
If it's in the can you're in a bit of trouble and the paint isn't really fit to breath in due to the mould spores present. If it's a water-based paint - you could try a little chlorine bleach to kill small amounts of mould, however it may also change the characteristics of the paint ie, colour and durability, plus it may react with the surface you're applying it to.... so beware.
If it's in an oil based paint the mould has reacted with the vegetable oils which suspend the oxides of colour - the paint is useless. It may have a crusty layer of mould with good paint below - but a really really bad odour and the pigments will have separated so the colour won't be any good.
If it's a painted surface - water-based or laytex then 3 drops of oil of cloves in a 1 pint (600ml) squirt bottle and spray the surface. leave for a few hours or over night and rinse the dead mould off with clean water, if it doesn't work first time do it again and you may need vinegar and sodium-bicarbonate with an old tooth brush. then the clove oil spray, then rinse.
Paint thinner can remove oil-based paint from brushes and other equipment but only while the paint it still wet. Acetone is often the only solvent that is strong enough to dissolve paint after it has dried. Paint thinners should not be used with latex paints, shellac or lacquers. If you want to knowmore details about how to use paint thinner you may check that.
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Paint thinner can remove oil-based paint from brushes and other equipment but only while the paint it still wet. Acetone is often the only solvent that is strong enough to dissolve paint after it has dried. Paint thinners should not be used with latex paints, shellac or lacquers. If you want to know more details about how to use paint thinner you may check that.
Where is the mold? If on the painted item, try using mold spray eg. Wet and Leave etc.