Biological is a different concept from Physical. Physical is related to Touch. 
Interfere is a synonym of Cross. Cross is related to God. God is etymologically related to Good. Good is related to Happy. 
Biological <--DistinctFrom--> Physical <--RelatedTo--> Touch 
Interfere <--Synonym--> Cross <--RelatedTo--> God --EtymologicallyRelatedTo--> Good <--RelatedTo--> Happy 