Your biggest problem is not the touch sensitive button, but your (justified) fear of contracting germs.

My quick-hack for all kinds of surfaces that must be touched but aren't clean is to use the back of my hand or my finger. You can push mechanical and touch operated buttons by curling in your finger and pressing the back of a finger joint or knuckle to the button.

You might still catch some germs this way, but they stay on the back of your hand until you wash them away. Whenever you touch your face (scratch an itch or rub your eyes), you usually use the inside of your hand and fingertips. As long as you remember not to rub your eyes with the backside of your hand, the risk of contracting the germs is reduced compared to pushing the button with your fingertip.

Of course, this does not eliminate the need to wash your hands. It just reduces the risk of accidently bringing germs in contact with your face before you washed your hands.

Your biggest problem is not the touch sensitive button, but your (justified) fear of contracting germs.

My quick-hack for all kinds of surfaces that must be touched but aren't clean is to use the back of my hand or my finger. You can push mechanical and touch operated buttons by curling in your finger and pressing the back of a finger joint or knuckle to the button.

You might still catch some harmful germs this way, but they stay on the back of your hand until you wash them away. People usually use their fingertips whenever they touch their face (scratch an itch or rub your eyes). As long as you remember not to rub your eyes with the backside of your finger or hand, the risk of contracting harmful germs is reduced compared to pushing the button with your fingertip.

Of course, this does not eliminate the need to wash your hands. It just reduces the risk of accidently bringing harmful germs in contact with your face before you wash your hands.