Should I or shouldn't I?

So in the time that husband and I have been living in this apartment complex (a bit over six months), the building hallway has had a large window without a screen. It just so happens that directly on the outside of the window, is a huge wasp nest. I have on a few occasions seen wasps come inside and fly around the hallway. On the weekend I killed one, and now I'm pretty sure they hate me. I always close the window, and yet the next time I'm out in the hallway, it's open again. Now I'd kind of understand if this was the only window, but there's another one right near it (with a screen intact) that is always open, which doesn't allow wasps in. As there are many people in the building and I'm not sure who the window-opener is (I'm assuming that although clever, the wasps are unable to open the window themselves), I can only see one option: the passive aggressive note.

I have constructed the following sign to potentially put up...

Yes, I did make this myself. I'm quite proud of it.

So the question is - should I, or shouldn't I put the sign up?

Extra information:

• I don't really know any of the surrounding neighbours well - we are only on a saying 'hello' in passing basis (sometimes).
• Husband really doesn't seem to be concerned about a potential wasp invasion, so he's no help.
• I'm not entirely sure if these are the type of wasps that sting people, so I may look silly putting this up if they're not a danger to anybody.
• I'm not sure how long this no-screen business has been going on. Perhaps all the other building occupants have no problem with this, and it's been this way for years. If this is the case, a sign suddenly showing up now may signal us as the culprits (being the most recent to move in).
• I think I'm allergic to wasps (not deathly so - I don't think, but once I stood on one accidently and my foot puffed up so much I couldn't wear shoes); or at the very least, I'm a hypochondriac. To that end - don't google wasp sting pictures. It's not pretty.  

What do you think...?