Interpretation #2: This is about Kurt Cobain's struggle with heroin:
"I travel through a tube and end up in your infection" - The infection is the unreal world of heroin and the tube is simply the needle.
"In a passionate kiss, from my mouth to yours" - The first "mouth" is the mouth of the needle. The second mouth is Kurt's vein, which is how the heroin is feeding him.
"You're my vitamins" - Heroin was all he needed.
kennon brooks - Orlando, FL