diff --git a/CHANGES/9451.bugfix.rst b/CHANGES/9451.bugfix.rst
new file mode 100644
index 00000000000..2adcbc66273
--- /dev/null
+++ b/CHANGES/9451.bugfix.rst
@@ -0,0 +1 @@
+Fixed error messages from :py:class:`~aiohttp.resolver.AsyncResolver` being swallowed -- by :user:`bdraco`.
diff --git a/aiohttp/resolver.py b/aiohttp/resolver.py
index daa90b828c6..1025df06398 100644
--- a/aiohttp/resolver.py
+++ b/aiohttp/resolver.py
@@ -100,7 +100,7 @@ async def resolve(
             )
         except aiodns.error.DNSError as exc:
             msg = exc.args[1] if len(exc.args) >= 1 else "DNS lookup failed"
-            raise OSError(msg) from exc
+            raise OSError(None, msg) from exc
         hosts: List[ResolveResult] = []
         for node in resp.nodes:
             address: Union[Tuple[bytes, int], Tuple[bytes, int, int, int]] = node.addr
@@ -134,7 +134,7 @@ async def resolve(
             )
 
         if not hosts:
-            raise OSError("DNS lookup failed")
+            raise OSError(None, "DNS lookup failed")
 
         return hosts
 
diff --git a/tests/test_resolver.py b/tests/test_resolver.py
index 8ca7d329264..701f0a453a3 100644
--- a/tests/test_resolver.py
+++ b/tests/test_resolver.py
@@ -315,6 +315,34 @@ async def test_async_resolver_ipv6_positive_lookup(loop: Any) -> None:
         )
 
 
+@pytest.mark.skipif(not getaddrinfo, reason="aiodns >=3.2.0 required")
+async def test_async_resolver_error_messages_passed(
+    loop: asyncio.AbstractEventLoop,
+) -> None:
+    """Ensure error messages are passed through from aiodns."""
+    with patch("aiodns.DNSResolver", autospec=True, spec_set=True) as mock:
+        mock().getaddrinfo.side_effect = aiodns.error.DNSError(1, "Test error message")
+        resolver = AsyncResolver()
+        with pytest.raises(OSError, match="Test error message") as excinfo:
+            await resolver.resolve("x.org")
+
+        assert excinfo.value.strerror == "Test error message"
+
+
+@pytest.mark.skipif(not getaddrinfo, reason="aiodns >=3.2.0 required")
+async def test_async_resolver_error_messages_passed_no_hosts(
+    loop: asyncio.AbstractEventLoop,
+) -> None:
+    """Ensure error messages are passed through from aiodns."""
+    with patch("aiodns.DNSResolver", autospec=True, spec_set=True) as mock:
+        mock().getaddrinfo.return_value = fake_aiodns_getaddrinfo_ipv6_result([])
+        resolver = AsyncResolver()
+        with pytest.raises(OSError, match="DNS lookup failed") as excinfo:
+            await resolver.resolve("x.org")
+
+        assert excinfo.value.strerror == "DNS lookup failed"
+
+
 async def test_async_resolver_aiodns_not_present(loop: Any, monkeypatch: Any) -> None:
     monkeypatch.setattr("aiohttp.resolver.aiodns", None)
     with pytest.raises(RuntimeError):