Really sorry for this! This is a known bug that will be fixed in the next update. If it's of any solace whatsoever, I believe a temporary workaround is to walk into and out of a gas cloud again - this should remove the effect. If not, saving, restarting the game, and loading *should* fix it.
If not, I am terribly sorry. I can instruct you how to edit the save file of the game to regain what progress that has been lost if it'd be of help!