fix malware issues, site has a warning page & small error

Want someone to fix problem When user goes to site , google & other search engines have posted a warning that this site contains malware & could infect your computer proceed with caution. I want someone that knows how to get these messages removed & remove any malware that may be there, only a few people post links 1 -2 people so should not be any malware. hosting support has done job & also can not identify any malware, but message is still there.