Eating at the desk

Does anyone else get bothered by people eating at their desk? I sit next to a couple of people that eat constantly! Crunchy candies, chips and someone even brought fish to their desk! I’m new to this job they allow one head phone. I have that one headphone on blast and still hear the crunchy bags and crunchy mouths. It’s driving me nuts! I walk around in hopes they would stop by the time I return. But it doesn’t! How does one get use to this kind of stuff? The annoyance hurts my ears. It’s a noise I hate. Should I just put two headphones in? And, if I get caught blame it on the noise disturbances?