This is the ESPHome configuration I use for my IoT air fresheners.

ESPHome - Air Freshener Config.yaml

substitutions:
  system_name: esph_dining_room_air_freshener
  friendly_name: Esph Dining Room Air Freshener

esphome:
  name: ${system_name}
  platform: ESP32
  board: esp32doit-devkit-v1

wifi:
  ssid: "your_network_ssid"
  password: "your_network_key"

  ap:
    ssid: ${friendly_name}
    password: "MlNQAm0J3n4U"

captive_portal:

logger:

api:

ota:

text_sensor:

  - platform: version
    name: "${system_name}_version"

sensor:

  - platform: wifi_signal
    name: "${system_name}_wifi_signal"
    update_interval: 30s

  - platform: uptime
    name: "${system_name}_uptime"
    update_interval: 60s
    
switch:

  - platform: gpio
    pin: GPIO4
    id: relay

  - platform: template
    name: "${system_name}_air_freshener"
    icon: "mdi:air-horn"
    turn_on_action:
    - switch.turn_on: relay
    - delay: 0.5s
    - switch.turn_off: relay