Excellent choice — #1 of 31 Merino ranks #1 of 31 fabrics for odour resistance. It is one of the best fabrics for this. Ranked with a wool-family bonus plus breathability and moisture management. It is the top pick.
Merino measures 80/100 for breathability, 15% moisture regain, 55/100 warmth, at 180 gsm. Wool fibres lead here: Merino is a wool fibre and resists odour naturally.