I'm studying to be a dental hygienist, it's a good profession. But, seeing patients saliva makes me very uncomfortable.
Then i think it is a wrong profession for you. Which other things do you know about the career. 
Well, dental hygienists are the primary source for discovering oral cancer and helping people avoid it. So I'd be able to help a lot of people if I finish my studies.
That is what i think you should focus on rather than what the saliva of those people might do for you. I am sure there are way to prevent coming in contact with body fluids
in controlling oral disease, while providing tailored treatment plans that emphasize the importance of behavioral changes. Some dental hygienists are licensed to administer local anesthesia and perform dental radiography. Dental hygienists are also the primary resource for oral cancer screening and prevention. In addition to these procedures, hygienists may take intraoral radiographs, apply dental sealants, administer topical fluoride, and provide patient-specific oral hygiene instruction. 
Dental hygienists work in a range of dental settings, from independent, private, or specialist practices to the public sector. Dental
Dental Hygienists Association (FIDHA)is the primary national body representing the dental hygienist profession in India, however some state dental hygienist associations also work at state level. In India, dental hygienists do not need to be employed by a dentist but can have their own clinic.
Direct access to care with a dental hygienist Canada.
Direct access to care with a dental hygienist Canada British Columbia.
1995 - A client must have seen a dentist within the previous 365 days in order for the hygienist to provide dental hygiene treatment.
2012 -