Writing this from a passively cooled (Streacom FC8 Evo) Linux PC with a Russian keyboard.

    # dmidecode 3.6
    Getting SMBIOS data from sysfs.
    SMBIOS 2.8 present.

    Handle 0x002C, DMI type 27, 15 bytes
    Cooling Device
        Temperature Probe Handle: 0x0029
        Type: <OUT OF SPEC>
        Status: <OUT OF SPEC>
        Cooling Unit Group: 1
        OEM-specific Information: 0x00000000
        Nominal Speed: Unknown Or Non-rotating
        Description: Cooling Dev 1

    Handle 0x002F, DMI type 27, 15 bytes
    Cooling Device
        Temperature Probe Handle: 0x0029
        Type: <OUT OF SPEC>
        Status: <OUT OF SPEC>
        Cooling Unit Group: 1
        OEM-specific Information: 0x00000000
        Nominal Speed: Unknown Or Non-rotating
        Description: Not Specified

    Handle 0x0037, DMI type 27, 15 bytes
    Cooling Device
        Temperature Probe Handle: 0x0036
        Type: Power Supply Fan
        Status: OK
        Cooling Unit Group: 1
        OEM-specific Information: 0x00000000
        Nominal Speed: Unknown Or Non-rotating
        Description: Cooling Dev 1

So a cooling device is still present.

Sensor data:

    iwlwifi_1-virtual-0
    Adapter: Virtual device
    temp1:        +59.0°C  

    acpitz-acpi-0    # Fake, always reports these temperatures
    Adapter: ACPI interface
    temp1:        +27.8°C  
    temp2:        +29.8°C  

    coretemp-isa-0000
    Adapter: ISA adapter
    Package id 0:  +51.0°C  (high = +86.0°C, crit = +92.0°C)
    Core 0:        +51.0°C  (high = +86.0°C, crit = +92.0°C)
    Core 1:        +47.0°C  (high = +86.0°C, crit = +92.0°C)
    Core 2:        +49.0°C  (high = +86.0°C, crit = +92.0°C)
    Core 3:        +49.0°C  (high = +86.0°C, crit = +92.0°C)