Unless your dog is 100% an inside dog it is already carrying lots of microbes; think about what dogs eat, lick, smell, walk on, lay on, etc .... Regardless of if we purposely feed them raw eggs or meat. A dog owners environment is already “contaminated”. The increased risk is more likely from the handling of pet food that now needs the extra precaution like handling raw ingredients in the kitchen; wash hands and bowls after feeding raw unlike when feeding kibble.
Lee is a greater health risk to me after unloading sheep from our stock trailer at the livestock auction (where all the other livestock were unloaded) then after eating raw eggs. What microbe filled areas have your dogs been in (dog park, animal trail in the woods, static water, under a picnic table used by many people, etc).
When we have fed raw meat, we fed it outside. Raw eggs are fed in crates. Direct exposure of raw feed to surfaces in the house is minimized.