Now how true this is we cannot confirm, nevertheless the whole idea sounds pretty fishy. These are found but several DIY home treatments that used to take away the nuisance down to flies. This plant produces urushiol that's a poisonous clear-liquid used in the sap of this plant. https://jaebko73xw3rhl6Clrrpwqetjpq5fgy7fo2scymqxgvffg5frr7q.webpkgcache.com/doc/-/s/www.opticaljournal.com%2Fstudy-links-depression-anxiety-to-dry-eye-syndrome%2F