| 1 | Portable stove such as butane or charcoal. | |
| 2 | Butane and butylenes has the same characteristic with propane and propylene. | |
| 3 | It never occurred to me but butane is an ingredient found in some lighter fluids. | |
| 4 | It was butane vapor, leaking from a corroded steel pipeline. | |
| 5 | To understand why, we'll have to explain a bit about aerosols and butane chemistry. |