This is especially true for pungent foods, which can be hard to ignore.
"It's rude to interrupt. When you do, it shows others that you don't have any respect, judgment, or patience," Randall says.
While participation can earn you some brownie points, bad timing can wipe those points away.
Making personal calls all day long
Talking or texting with friends or family on company time is unprofessional and could be against company policy, Randall says. What's more, doing it during a break is fine, but these correspondences should be kept out of the workplace, even the lunch room.
"You never know when your boss may walk by for an impromptu chat," she says. "What will they see or hear?"
"If the topic of conversation is of a delicate nature, be sure to keep it private. One overheard juicy tidbit can spread like wildfire," Randall says.
Avoiding work social events
Whether you're shy or you feel like you have better things to do, never attending company-hosted events, declining coworker lunches, and calling in sick on team building days gives the impression that you are antisocial, arrogant, and not a part of the team, Randall says.
In most fields, casual grooming in public is frowned on. If you need a touch up, we suggest heading to the bathroom.
There is a line between curiosity and nosiness, which you don't want to cross. Curiosity is when you ask who the new hire is. Nosiness, on the other hand, is when you rifle through your boss's files to see how much the woman three cubicles down earns.
Repeatedly responding to suggestions with a pessimistic or contrary attitude can be construed as being uncooperative, Randall says. Phrases like "That won't work," "That sounds too hard," or, "I wouldn't know how to start," should be avoided.
Don't be the one who edges into other people's personal space, Randall warns.
"You know the ones — they place their coffee mug just so, a comfortable reaching distance, making room for their notebook, elbows, and of course their cell phone and protein bar," she says. "As the person seated next to them, you're left with only enough room for a water bottle."