Not necessarily. What you need to #focus on is the type of people who follow the Influencer, and what else they might like. For example, my @DearMishu is followed by dog lovers but also by people who are interested in travel, a holistic lifestyle, family, and living in the present. What products would those people like? Get creative!
I strongly recommend using a contract for any sponsorship to protect yourself and your business, such as my Brand-Influencer Contract