---
type: restriction
id: usps-odor-producing-materials
asset: shipping-restrictions-by-class
title: "odor-producing materials — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c4_018.htm
source_quote: "Any matter that is a source of an obnoxious odor is nonmailable."
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "odor-producing materials"
carrier: "USPS"
restriction_type: "prohibited"
scope: "all domestic mail"
conditions: "Any matter that is a source of an obnoxious odor is nonmailable"
verified: false
unverified_fields: carrier, item_category, scope
---
**Item category:** odor-producing materials

**Carrier:** USPS

**Restriction type:** prohibited

**Scope:** all domestic mail

**Conditions:** Any matter that is a source of an obnoxious odor is nonmailable

> Any matter that is a source of an obnoxious odor is nonmailable.

Source: <https://pe.usps.com/text/pub52/pub52c4_018.htm>