Tar-based soaps are known for a distinct smoky, earthy smell, and the main component here is birch tar extract, so the scent is part of the product's character. If you are used to neutral shower gels, the smell will be noticeable on the bar and while you lather.
What matters more is what happens after rinsing. With typical tar soaps, the scent is strongest during washing and fades to a faint woody note on the skin once you dry off; most people stop noticing it shortly after dressing. Hair can hold the smell longer, especially if it is long, porous, or bleached. If you are not sure how the lingering scent will feel, try one wash before making it a daily product.
Scent perception is subjective, so no one can promise exactly how strong it will be for you. What you can control is storage: keep the bar on a draining soap dish so it dries between uses, because a constantly wet bar softens and releases more odor. In practice, the smell is gone or barely present by the time you leave the sauna or go to work. For many buyers, the tar note is the reason to choose this kind of soap in the first place.