Not trying to scare you (or gross you out), but there seems to be a lot of misleading information out there about how to approach using a public restrooms.
One of the major misconceptions is that it is better to line the toilet seat with toilet paper, but not true!
Toilet paper material is absorbent. When we look for TP in the store we search out extra absorbent, but this absorbency also attracts germs that become airborne when you flush. Not to mention everyone that touches the toilet paper for a quick blow of the nose. Double Gross!