Tenant complained of odors coming from kitchen sink. Upon arrival I could not smell anything which made it difficult to determine what could be causing said odor. Inspected plumbing and noticed build up in tubular drains as as well as the drain hose coming from air gab to disposal. Cleaned out these drains in order to attempt the issue with odor. If tenant still complains of odors coming from sink the next step would be having to replace garbage disposal, basket strainers on both sides of the sink as well as drain hose for dishwasher. At timed organic material can get stuck in these fittings and lead to the odor.