A core part of the ALGO Model is to sell what already sells (and is profitable). So if you come across profitable fast-selling colognes or perfumes, you will want to possibly sell them but there are some unique factors to consider.
The main concern with selling most colognes and perfumes, is they are considered "dangerous goods" because they are aerosols. So in order to sell these via FBA, you have to be approved for Amazon's hazmat program. If you end up getting approved for that, then colognes/perfumes could be a good opportunity, but you won't be able to sell via FBA until you are approved by Amazon for their hazmat program.