Workplaces can be some interesting environments.
You interact with people who may have different beliefs or customs, different educational levels or dialects, and even different ways in which they were taught etiquette (A.K.A. "home training").
If you are fortunate, you work in an office with encouraging people who generally get along and also respect each others' boundaries.
If you aren't so fortunate, I'm so sorry that's the case and hopefully things will get better or hopefully you'll find another job somewhere else.
Either way though, you have probably dealt with at least one annoying or aggravating co-worker at times.
If you are honest, you and I have probably been annoying co-workers to someone at some point in time as well. Hopefully, we keep our offenses to a minimum.