Funerals and memorial services require the most restrained fragrance approach of any social setting. Grief and sensitivity demand absolute discretion.
The Guidance
Ideally, wear nothing. A funeral is about the person being remembered, not about you. If you feel naked without cologne, one spray on the chest under a dark suit jacket. That's the maximum. Nobody should be able to detect your fragrance from their seat.
If You Wear Something
L'eau D'Issey — The most transparent option. Practically invisible.
Bleu de Chanel EDP — Clean, muted, respectful. The safest designer choice for somber occasions.
Never Wear
Anything sweet, loud, party-oriented, or attention-grabbing. This is not the time to be noticed or complimented. When in doubt, skip cologne entirely. Nobody has ever been criticized for being unscented at a funeral.