Insomatosensible—untouchable Ungustatorable—untasteable Inolfactoroble—unsmellable Or—mere oblivion Sans teeth, sans eyes, sans taste, sans everything.

Some are, (well - one is! ;) and others are different. Intasteable? Tasteless Inhearable? Inaudible Insmellable? Odourless Intangible, although technically meaning 'unable to be touched' has a slightly different meaning - more of 'not being real'.

For hearing, you can use "inaudible", but for the other senses you may need to use "imperceptible"