Learn from my experience! Say goodbye to Vaseline and spit as lubes they can lead to infections like BV and dryness. Opt for a simple water based lubricant for a smooth and safe experience. Vaseline as Lube: 5 Slimy Truths [Vaginal & Anal] Quanna Four things you should never ever use as lubricants during coitus 1. Vaseline Petroleum jelly It traps bacteria, increases risk of infections (especially yeast & BV), and can damage condoms. 2. Saliva ( Approach to lubricant use for sexual activity The College of Family Physicians of Canada What can you use as lube?