The fans used to push or pull air through a carbon filter are typically pretty loud. Hard not to be when you are moving so much air. You can get quitter ones

The fans used to push or pull air through a carbon filter are typically pretty loud. Hard not to be when you are moving so much air. You can get quitter ones but they are expensive. If you are going the carbon filter/canfan route its most likely going to be loud. You can create a box around the fan with something like MDF to reduce the noise.