Prevention medicine when bj without condom

[ABCABC]

Hi,

I know some guys apply chlorhexidine to prevent STD.

Unlike condom, this is not 100% prevention, but can be helpful when you don't want to use condom.

What other medicine/liquid would you recommend to those who likes bj without condom?

 

[Bernardus]

If you're that worried use a condom.

All the rest is bullshit and won't work