Common soil bacteria tend to be harmless. The next time some woman freaks out over your dirty stove, tell her that tests have found a that single man's kitchen is much cleaner than a single woman's. Bachelor's don't clean often, so they don't contaminate things with a dirty dishrag. The risk that your mutt will make you sick is very small, but try to refrain yourself from kissing him full on the mouth, especially on the first date. There's only a tiny chance that nut-bowl bacteria will give you the skids, but those odds go up slightly if you take an antacid after dinner.
Antacids reduce stomach acids that kill bacteria.
In the off chance that these bugs make it to your stomach, diarrhea could strike up to a week after. So keep your mouth closed underwater. The receiver handle, mouthpiece, and buttons of any well-used pay phone can be loaded with influenza and rhinoviruses. Using that sponge to clean the kitchen spreads filth everywhere. Disinfect your sponge each night by soaking it in a cup of water mixed with a few teaspoons of bleach.