---
type: "Bill"
title: "Public Health - Clean Indoor Air Act - Revisions"
description: "Public Health - Clean Indoor Air Act - Revisions"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2024"
identifier: "HB 238"
citation: "Maryland HB 238 (2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: []
version_count: 4
action_count: 16
vote_count: 3
first_action: "2023-09-13"
last_action: "2024-05-16"
source: "openstates"
source_identifier: "ocd-bill/bc0e4def-e360-42c0-a46e-6c8bab39fa02"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0238?ys=2024RS&search=True"
source_hash: "48ba0bf52a5bc6ba5b374455e155546b4a088308a32fbb14a08e5b9b7c58e19e"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-md"]
---

# Maryland HB 238 (2024) — Public Health - Clean Indoor Air Act - Revisions

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Chapter - Public Health - Clean Indoor Air Act - Revisions** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/Chapters_noln/CH_754_hb0238e.pdf)
2. **Enrolled - Public Health - Clean Indoor Air Act - Revisions** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0238e.pdf)
3. **First - Public Health - Clean Indoor Air Act - Revisions** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0238f.pdf)
4. **Third - Public Health - Clean Indoor Air Act - Revisions** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0238t.pdf)

## Votes

- On Third Reading and Final Passage (Hse concurred) — **116–18** (pass) · lower
- On Third Reading — **134–1** (pass) · lower
- On Third Reading (Amend) — **34–11** (pass) · upper

## Sponsors

- Chair, Economic Matters Committee — primary (organization)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-09-13** Pre-filed `introduction`
- **2024-01-10** First Reading Economic Matters `referral-committee`
- **2024-01-31** Hearing 2/20 at 1:00 p.m.
- **2024-03-13** Favorable Report by Economic Matters `committee-passage-favorable`
- **2024-03-13** Favorable Adopted `committee-passage-favorable`
- **2024-03-13** Second Reading Passed
- **2024-03-14** Third Reading Passed `passage`
- **2024-03-14** Referred Finance `referral-committee`
- **2024-03-27** Favorable with Amendments Report by Finance `committee-passage-favorable`
- **2024-03-28** Favorable with Amendments { `committee-passage-favorable`
- **2024-03-28** Second Reading Passed with Amendments
- **2024-03-29** Third Reading Passed `passage`
- **2024-04-05** House Concurs Senate Amendments
- **2024-04-05** Third Reading Passed `passage`
- **2024-04-05** Passed Enrolled
- **2024-05-16** Approved by the Governor - Chapter 754 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/bc0e4def-e360-42c0-a46e-6c8bab39fa02`. Confidence: reported (aggregated from official Maryland legislature records).