re: Methane created Methanol
"I wasn't drinking it and wore gloves and cleaned the parts outdoors."
Then you were probably exposed to less Methanol then if you were in room with bunch sweaty guys who drank diet soft drinks.
"Methanol occurs naturally in humans, animals and plants. It is a natural constituent in blood, urine, saliva and expired air. ... The two most important sources of background body burdens for methanol and formate are diet and metabolic processes. Methanol is available in the diet principally from fresh fruits and vegetables, fruit juices ... fermented beverages ... and diet foods (principally soft drinks)."
http://www.gasdetection.com/TECH/meoh.html
:)