There are some cigars that have given me instant headaches the moment I fire it up. I remember this happen when I went to Mexico in my honymoon, I wasn't really into cigars yet and i grabbed one that had jut been rolled in the resort. It happened again last week with a HDM that was gifted to me at work, and again today with a handmade cigar rolled by an old man in Calle Ocho. Why is this happening? It's not the strength cause I have smoked some strong ones like PAMs, PAN, ERDM, and have not had this happen to me. I ussually like medium to medium-full bodied cigars so that can't be the problem. And it's not nicotine sick either, it's just a pounding headache, no nauseas, no buzz, nothing else. Anyone else has experienced this?