Calvin Harris allergic to Swift's catsLos Angeles, April 19 (AZINS) Scottish DJ Calvin Harris doesn't like going to singer Taylor Swift's house because he is allergic to her cats.

"When he stayed over at Taylor's LA house last week, Calvin says he was up all night blowing his nose and complaining he couldn't breathe. Apparently he's allergic to the long fluffy hair on Taylor's cats and they usually sleep in the bed so it's everywhere," a source said reports femalefirst.co.uk.

Swift's devotion to her cats have caused some tension as Harris is now reluctant to visit her at home.

"He left really early the next morning -- I think it's caused a bit of tension because now Calvin wants to meet up in hotel rooms or at his place in LA, but not at Taylor's house," the source added to Heat magazine.

The 25-year-old singer has had her cats -- Meredith for three-and-a-half years and Olivia for almost a year and likes to take them everywhere with her.