The website uses "cookies", which is a text file that is stored on your computer, mobile etc. similarly for the purpose of recognizing it, remembering settings, performing statistics, and targeting ads. Cookies cannot contain malicious code such as virus.
It is possible to delete or block cookies. See instructions: http://minecookies.org/cookiehandtering
If you delete or block cookies, ads may become less relevant to you and appear more frequently. You may also risk that the website does not work optimally and that there is content that you can not access