See - Visible/(Seeable*)
Hear - Audible/(Hearable*)
Smell - Olfactible (used very rare)/Smellable
Taste - Edible (for food)/Potable (for water)/(Tastable*)
Touch - Tangible/Palpable/Tactile/(Touchable*)
*Note: They can be used but word on the first column (except for olfactible) are commonly used, but smellable is rather used than olfactible