Is it safe to eat smoked bacon without grilling?
I might disagree a little with rumtscho - traditionally cured bacon is one thing, what you get in packets from the supermarket is another. It looks similar and it tastes similar, but commercial products are processed rapidly and not tested for immediate consumption without cooking.

Products like Parma ham and Schwartzwaldschinken are proven to be adequately preserved for consumption without cooking. Modern bacon is not, in general. OTOH I know for a fact that raw packet bacon is commonly eaten in Spain without cooking, and I've met people who eat raw sausages (not a good idea in my opinion).

Me, I wouldn't eat it uncooked ...