Should I Tap this Bolt Hole?

[Ski_rush]

While going through the bike yesterday, I noticed that the cover for the front sprocket is missing the lower bolt (see pic). I thought it was strange. I have misc. loose bolts of the same size and even tried using the bolt from the top of the cover. None worked. They went in a little ways and then stopped. I also noticed that all bolts went in crooked. I'm guessing that's why the bolt is not there in the first place.

1. Should I tap this bolt hole? Is there potentially anything there that I could mess up if I tap this and go too far or something?

2. Or, would you not worry about it since the top bolt seems to hold the over pretty securely?

*this is not a pic of my bike, I just found this on the internet to illustrate the bolt I'm referring to.